addons to firefox quick reference

get rid of newtab screen, which is a huge bandwidth waster
about:addons
new tab override

https://addons.mozilla.org/en-US/firefox/addon/new-tab-override/

get rid of ads
google for and install adblock plus

https://addons.mozilla.org/en-US/firefox/addon/adblock-plus/

download scraper for html pages with content.
downloadthemall

https://addons.mozilla.org/en-US/firefox/addon/downthemall/

google for and load
download youtube videos as mp4

https://addons.mozilla.org/en-US/firefox/addon/download-youtube/

Apk downloader extension
https://addons.mozilla.org/en-US/firefox/addon/apk-downloader/

For some incomprehensible reason, the default action on a page in Mozilla Firefox on Linux isn't to go back a to the prior page.

This is fixed with the following to work as it does everywhere else.

The browser.backspace_action is defaulted to 2 on Ubuntu, and perhaps on the Iceweasel version on generic Debian.

1. Open Firefox and type about:config in the addressbar and press Enter. It'll confirm, click on I'll be careful, I promise! button.
2. Now type backspace in the Filter box and look for following key:

browser.backspace_action

3. The entry "browser.backspace_action" would be set to 0. You can change its value to any of following based upon your requirements:

1 - To change its action to scroll up in a page. You can use "Shift+Backspace" to scroll down.
2 - To disable it.

New tab override
older versions are available here, when it is necessary to downgrade the browser.

https://addons.mozilla.org/en-US/firefox/addon/new-tab-override/versions/ 

Download as mp4 replacement
https://addons.mozilla.org/en-US/firefox/addon/easy-youtube-video-download/